Group COMMAND_SET_MEDIA_ITEM and COMMAND_CHANGE_MEDIA_ITEMS together

I don't think it's useful to keep these in numerical order, it makes
more sense to keep them grouped into a 'logical' ordering.

#minor-release

PiperOrigin-RevId: 460453464
(cherry picked from commit 1b1e0f89)

extensions/cast/src/main/java/com/google/android/exoplayer2/ext/cast/CastPlayer.java

@@ -99,9 +99,9 @@ public final class CastPlayer extends BasePlayer {
               COMMAND_GET_TIMELINE,
               COMMAND_GET_MEDIA_ITEMS_METADATA,
               COMMAND_SET_MEDIA_ITEMS_METADATA,
+              COMMAND_SET_MEDIA_ITEM,
               COMMAND_CHANGE_MEDIA_ITEMS,
-              COMMAND_GET_TRACKS,
-              COMMAND_SET_MEDIA_ITEM)
+              COMMAND_GET_TRACKS)
           .build();
 
   public static final float MIN_SPEED_SUPPORTED = 0.5f;

library/common/src/main/java/com/google/android/exoplayer2/Player.java

@@ -372,6 +372,7 @@ public interface Player {
         COMMAND_GET_TIMELINE,
         COMMAND_GET_MEDIA_ITEMS_METADATA,
         COMMAND_SET_MEDIA_ITEMS_METADATA,
+        COMMAND_SET_MEDIA_ITEM,
         COMMAND_CHANGE_MEDIA_ITEMS,
         COMMAND_GET_AUDIO_ATTRIBUTES,
         COMMAND_GET_VOLUME,
@@ -383,7 +384,6 @@ public interface Player {
         COMMAND_GET_TEXT,
         COMMAND_SET_TRACK_SELECTION_PARAMETERS,
         COMMAND_GET_TRACKS,
-        COMMAND_SET_MEDIA_ITEM,
       };
 
       private final FlagSet.Builder flagsBuilder;
@@ -1422,6 +1422,7 @@ public interface Player {
     COMMAND_GET_TIMELINE,
     COMMAND_GET_MEDIA_ITEMS_METADATA,
     COMMAND_SET_MEDIA_ITEMS_METADATA,
+    COMMAND_SET_MEDIA_ITEM,
     COMMAND_CHANGE_MEDIA_ITEMS,
     COMMAND_GET_AUDIO_ATTRIBUTES,
     COMMAND_GET_VOLUME,
@@ -1433,7 +1434,6 @@ public interface Player {
     COMMAND_GET_TEXT,
     COMMAND_SET_TRACK_SELECTION_PARAMETERS,
     COMMAND_GET_TRACKS,
-    COMMAND_SET_MEDIA_ITEM,
   })
   @interface Command {}
   /** Command to start, pause or resume playback. */
@@ -1490,6 +1490,8 @@ public interface Player {
   int COMMAND_GET_MEDIA_ITEMS_METADATA = 18;
   /** Command to set the {@link MediaItem MediaItems} metadata. */
   int COMMAND_SET_MEDIA_ITEMS_METADATA = 19;
+  /** Command to set a {@link MediaItem MediaItem}. */
+  int COMMAND_SET_MEDIA_ITEM = 31;
   /** Command to change the {@link MediaItem MediaItems} in the playlist. */
   int COMMAND_CHANGE_MEDIA_ITEMS = 20;
   /** Command to get the player current {@link AudioAttributes}. */
@@ -1512,8 +1514,6 @@ public interface Player {
   int COMMAND_SET_TRACK_SELECTION_PARAMETERS = 29;
   /** Command to get details of the current track selection. */
   int COMMAND_GET_TRACKS = 30;
-  /** Command to set a {@link MediaItem MediaItem}. */
-  int COMMAND_SET_MEDIA_ITEM = 31;
 
   /** Represents an invalid {@link Command}. */
   int COMMAND_INVALID = -1;

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImpl.java

@@ -283,6 +283,7 @@ import java.util.concurrent.TimeoutException;
                   COMMAND_GET_TIMELINE,
                   COMMAND_GET_MEDIA_ITEMS_METADATA,
                   COMMAND_SET_MEDIA_ITEMS_METADATA,
+                  COMMAND_SET_MEDIA_ITEM,
                   COMMAND_CHANGE_MEDIA_ITEMS,
                   COMMAND_GET_TRACKS,
                   COMMAND_GET_AUDIO_ATTRIBUTES,
@@ -292,8 +293,7 @@ import java.util.concurrent.TimeoutException;
                   COMMAND_SET_DEVICE_VOLUME,
                   COMMAND_ADJUST_DEVICE_VOLUME,
                   COMMAND_SET_VIDEO_SURFACE,
-                  COMMAND_GET_TEXT,
-                  COMMAND_SET_MEDIA_ITEM)
+                  COMMAND_GET_TEXT)
               .addIf(
                   COMMAND_SET_TRACK_SELECTION_PARAMETERS, trackSelector.isSetParametersSupported())
               .build();